/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2020, Arnaud Roques
 *
 * Project Info:  http://plantuml.com
 * 
 * If you like this project or if you find it useful, you can support us at:
 * 
 * http://plantuml.com/patreon (only 1$ per month!)
 * http://plantuml.com/paypal
 * 
 * This file is part of PlantUML.
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
 * License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 *
 * Original Author:  Arnaud Roques
 * 
 *
 */
package net.sourceforge.plantuml.project.core2;

public class Solver1 {

	private final WorkLoad workLoad;

	public Solver1(WorkLoad workLoad) {
		this.workLoad = workLoad;
	}

	public TeethRange solveEnd(long start, long fullLoad) {

		final IteratorSlice slices = workLoad.slices(start);
		final TeethRange result = new TeethRange();

		while (true) {
			final Slice current = slices.next();
			assert current.getEnd() >= start;
			start = Math.max(start, current.getStart());

			final long sliceLoad = 1L * (current.getEnd() - start) * current.getWorkLoad();
			if (sliceLoad >= fullLoad) {
				final long theoricalEnd = start + fullLoad / current.getWorkLoad();
				result.add(new Tooth(start, theoricalEnd, fullLoad));
				return result;
			}
			assert sliceLoad < fullLoad;
			result.add(new Tooth(start, current.getEnd(), sliceLoad));
			fullLoad -= sliceLoad;
		}

	}

}
